#!/usr/bin/env python3
"""
脚本名称：ch29_exe.py
功能描述： 演示 if 条件语句
作者：Gavin
创建日期：2022-05-06
版本：1.0
依赖库：无
使用方法： python ch29_exe.py
"""

people = 20
cats = 30
dogs = 15

if people < cats:
    print("Too many cats! The world is doomed!")
if people > cats:
    print("Not many cats! The world is saved!")
if people < dogs:
    print("The world is drooled on!")
if people > dogs:
    print("The world is dry!")

dogs += 5

if people >= dogs:
    print("People are greater than or equal to dogs.")
if people <= dogs:
    print("People are less than or equal to dogs.")
if people == dogs:
    print("People are dogs.")
